Virtology

Production Zero Trust Remote Access Platform (BEST PRACTICE CERTIFIED REFERENCE ARCHITECTURE) Document Classification Security Level: Enterprise / Tier-0 / Audit-Ready Framework Alignment: NIST 800-207 (Zero Trust), NIST 800-53, ISO 27001 Maximum Scale: 100 concurrent VPN users IPv6: Disabled globally Logging Retention: 90 days (SIEM hot storage minimum) 1. Executive Architecture Summary This is a fully production-certified Zero Trust remote access architecture integrating: OpenVPN 2.6.8+ (hardened TLS + mutual authentication) Microsoft Windows Server 2025 AD DS (fully hardened Tier 0 design) Microsoft Entra ID (primary identity provider) Cisco Identity Services Engine (ISE) 3.x (Network Access Control) Microsoft AD CS 2025 + Step-CA 0.27+ (dual PKI model) OPNSense 24.7+ (segmentation + IDS/IPS enforcement) Terraform 1.7+ (GitOps infrastructure management) SIEM + SOAR (Microsoft Sentinel / Splunk Enterprise Security compatible) 2. Zero Trust Reference Architecture ...

  OpenVPN Production Reference Architecture (No-Surprises Hardened Design) Purpose This document defines a production-ready OpenVPN architecture with explicit operational failure modes, high availability design, and safe default configurations. It is designed to eliminate common misinterpretations that lead to outages, security gaps, and false assumptions in enterprise deployments. This is not a compliance certification. It is a hardened engineering reference implementation aligned with Zero Trust principles and commonly interpreted NIST 800-53 / 800-207 control objectives. 1. High-Level Architecture ┌──────────────────────────┐ │ Active Directory (AD) │ └─────────────┬────────────┘ │ ┌─────▼─────┐ │ NPS │ (RADIUS Authentication) └─────┬─────┘ │ │ RADIUS ...

  After 20+ years in IT, I can tell you this—broken hyperlinks are like flat tires. They never happen at a good time, and they’re almost always something simple… once you find it. I’ve dealt with broken links everywhere—email systems, SharePoint, VPN portals, internal dashboards—you name it. Over time, I’ve developed a no-nonsense way to track them down without wasting half a day chasing ghosts. Here’s exactly how I approach it. Step 1: Don’t Assume—Prove It’s Broken First thing I do? Click the link myself. Sounds obvious, but you’d be surprised how often the issue is: User error Cached sessions Or “it didn’t work once, so now it’s broken forever.” I’ll test it: In another browser In private/incognito mode Sometimes on another machine If it works for me but not them, I already know I’m dealing with permissions or environment—not the link itself. Step 2: Look for the “Dumb Stuff” First After all these years, I’ve learned this the hard way— it’s usually something small and dumb . I s...